Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _OMFS_FS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _OMFS_FS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) /* OMFS On-disk structures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #define OMFS_MAGIC 0xC2993D87
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define OMFS_IMAGIC 0xD2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define OMFS_DIR 'D'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define OMFS_FILE 'F'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define OMFS_INODE_NORMAL 'e'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define OMFS_INODE_CONTINUATION 'c'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define OMFS_INODE_SYSTEM 's'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define OMFS_NAMELEN 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define OMFS_DIR_START 0x1b8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define OMFS_EXTENT_START 0x1d0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define OMFS_EXTENT_CONT 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define OMFS_XOR_COUNT 19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define OMFS_MAX_BLOCK_SIZE 8192
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define OMFS_MAX_CLUSTER_SIZE 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define OMFS_MAX_BLOCKS (1ul << 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct omfs_super_block {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	char s_fill1[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	__be64 s_root_block;		/* block number of omfs_root_block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	__be64 s_num_blocks;		/* total number of FS blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	__be32 s_magic;			/* OMFS_MAGIC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	__be32 s_blocksize;		/* size of a block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	__be32 s_mirrors;		/* # of mirrors of system blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	__be32 s_sys_blocksize;		/* size of non-data blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct omfs_header {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	__be64 h_self;			/* FS block where this is located */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	__be32 h_body_size;		/* size of useful data after header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	__be16 h_crc;			/* crc-ccitt of body_size bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	char h_fill1[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	u8 h_version;			/* version, always 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	char h_type;			/* OMFS_INODE_X */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	u8 h_magic;			/* OMFS_IMAGIC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	u8 h_check_xor;			/* XOR of header bytes before this */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	__be32 h_fill2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct omfs_root_block {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	struct omfs_header r_head;	/* header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	__be64 r_fill1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	__be64 r_num_blocks;		/* total number of FS blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	__be64 r_root_dir;		/* block # of root directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	__be64 r_bitmap;		/* block # of free space bitmap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	__be32 r_blocksize;		/* size of a block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	__be32 r_clustersize;		/* size allocated for data blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	__be64 r_mirrors;		/* # of mirrors of system blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	char r_name[OMFS_NAMELEN];	/* partition label */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct omfs_inode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	struct omfs_header i_head;	/* header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	__be64 i_parent;		/* parent containing this inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	__be64 i_sibling;		/* next inode in hash bucket */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	__be64 i_ctime;			/* ctime, in milliseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	char i_fill1[35];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	char i_type;			/* OMFS_[DIR,FILE] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	__be32 i_fill2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	char i_fill3[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	char i_name[OMFS_NAMELEN];	/* filename */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	__be64 i_size;			/* size of file, in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct omfs_extent_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	__be64 e_cluster;		/* start location of a set of blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	__be64 e_blocks;		/* number of blocks after e_cluster */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct omfs_extent {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	__be64 e_next;			/* next extent table location */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	__be32 e_extent_count;		/* total # extents in this table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 	__be32 e_fill;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	struct omfs_extent_entry e_entry;	/* start of extent entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #endif